"We cannot create an object of interface but we can create a
variable of it". Discuss the statement with the help of an
example.
(Plz help us to provide immediately.)
Answer Posted / prashant sharma
1.Interface myInterface{....};
2.Class myClass{......}
3.myInterface vInterace;
4.vInterface = new myClass();
In line 3 we are creating a var of type myInterface. It
holds an memory space for var type myInterface. it is just
like any other var type. Why there can't be ann object of
interface ..ans to this lies in post 1
In line 4 we create a object of class myClass. This object
returns the reference of space hold by class object on heap.
Thanks to JAVA inheritence structure, now variable
vInterface can refer to object of myClass as they are
interrelated
Interrelated in the sense taht when a class implements an
interface its object create definition of the interface in
the object on heap.
Hope it helps....
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
Explain restrictions on using enum?
Difference between Linked list and Queue?
what is the difference between future and callable interface in java?
How to find the largest value from the given array.
How to overcome the exception object reference not set to an instance of object?
Can java run on google chrome?
Can we have return statement in finally clause? What will happen?
What does arrays sort do in java?
Can we have any code between try and catch blocks?
Is namespace same as package in java?
Is 0 an even number?
What is a class reference?
What is a method in coding?
What is the use of join method?
What is java used for?